329 results found
Medical tests
… the tracer is put into a vein (intravenous, or IV ) in your arm. Sometimes it's taken by mouth or inhaled through … of inflammation or infection. How To Prepare Before you have a SPECT scan, tell your doctor if you: Have diabetes. … at least 6 hours before some SPECT scans. Ask your doctor when or if you need to fast before the test. Your doctor …
Medical tests
… pictures of the spine and vertebrae . During the test, you will lie on a table that is attached to the CT scanner, … compression fractures . Check on problems of the spine that have been present since birth (congenital). Look at problems … or dye is used, you may feel a quick sting or pinch when the IV is started. The dye may make you feel warm and …
Medical tests
… most often used for the neck, arms, and legs. Check leg pain that may be caused by intermittent claudication . This … ultrasound may be used to guide decisions during pregnancy when: The fetus is smaller than normal for the gestational … stroke. How To Prepare Depending on what the test is for, you may be asked not to eat or drink after midnight before …
Medical tests
… tracer liquid is put into a vein (intravenous, or IV ) in your arm. The tracer moves through your body, where much of … done to remove a tumour. Help diagnose Alzheimer's disease when the symptoms are not clear or when a person has … Positron Emission Tomography (PET)—HowToPrepare Before you have a PET scan, tell your doctor if: You have diabetes. If …
Medical tests
… waves, which vibrate at a certain speed (frequency) and have a certain height (amplitude). The vibration speed of a … determines how loud the sound is (volume). Hearing happens when these sound waves travel through the ear and are turned … as sound. Hearing tests help find what kind of hearing loss you have. The tests measure how well you can hear sounds …
Medical tests
… test that can check for problem areas in certain tissues in your body. A radioactive tracer (tracer) called gallium … bones, liver, and intestine, and areas that are inflamed or have a buildup of white blood cells . After the tracer … days), and 72 hours (3 days) after the tracer is injected. When you come in for the scan, you may need to remove your …
Medical tests
… to make pictures of the head and face. During the test, you will lie on a table that is attached to the CT scanner, … damaged. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you … or dye is used, you may feel a quick sting or pinch when the IV is started. The dye may make you feel warm and …
Medical tests
… can only be done on babies before the bones of the skull have grown together. The test looks for possible problems of … the brain. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells … 15 to 30 minutes. How It Feels This test doesn't cause any pain or discomfort for your baby. Risks There are no known …
Medical tests
… pictures of structures inside of the body. During the test, you will lie on a table that is attached to the CT scanner, … the cancer. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells you … or dye is used, you may feel a quick sting or pinch when the IV is started. The dye may make you feel warm and …
Medical tests
… to make magnified images, or pictures, of the back of your eye . This includes the retina. It's the part of the … treatment is working. You may need retinal imaging if: You have diabetes or diabetic retinopathy . These conditions can … of your eye. How It Feels The tests themselves don't cause pain or discomfort. For some tests, very bright light may …
